70550143 has 4 divisors (see below), whose sum is σ = 72190888. Its totient is φ = 68909400.

The previous prime is 70550107. The next prime is 70550189. The reversal of 70550143 is 34105507.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70550143 - 2¹³ = 70541951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70557143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820308 + ... + 820393.

It is an arithmetic number, because the mean of its divisors is an integer number (18047722).

Almost surely, 2^70550143 is an apocalyptic number.

70550143 is a deficient number, since it is larger than the sum of its proper divisors (1640745).

70550143 is a wasteful number, since it uses less digits than its factorization.

70550143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640744.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 70550143 is about 8399.4132533172. The cubic root of 70550143 is about 413.2053787222.

The spelling of 70550143 in words is "seventy million, five hundred fifty thousand, one hundred forty-three".